text: The England striker opened the scoring with a brilliant 25-yard strike over goalkeeper Simon Mignolet from Riyad Mahrez's long ball forward.
  And he sealed the victory when he turned home Shinji Okazaki's deflected shot from close range.
  The Foxes fully deserved their victory, with Mignolet touching an Okazaki header onto the bar in the first half.
  Media playback is not supported on this device
  Leicester's title bid is unique in the Premier League age and with each victory, they move one game closer to winning their first ever top-flight title.
  There was a feeling the next two weeks could define Leicester's season - this game against Liverpool is followed by trips to title rivals Manchester City and Arsenal.
  But they came through the first of those three games in style. Vardy caught Mignolet off his line with his goal-of-the-season contender and then added a second 11 minutes later.
  The Foxes had most of the game's big chances, Mignolet brilliantly denying a Mahrez curling strike as well as touching Okazaki's effort onto the crossbar. Moments before Vardy's second, the hosts should have had a penalty when Mamadou Sakho brought down Okazaki.
  Foxes midfielder Danny Drinkwater said: "We're staying on the ground but if we carry on the way we are then why not have the belief [to win the league]? It would go down in history surely."
  Vardy - who is set to sign a new three-and-a-half-year deal with the Foxes - had never scored a Premier League goal from outside the box with his first 21 top-flight attempts.
  He let Mahrez's long ball bounce before smashing it over Mignolet. After the game he revealed he had seen the keeper stray off his line on previous occasions and decided to try his luck.
  Leicester midfielder Drinkwater told BBC Match of the Day: "His first goal was incredible. You think he's going to square it but he hits it top corner. It sums his season up. He can turn an average ball into a great ball."
  Leicester boss Claudio Ranieri said: "Amazing. The first goal was unbelievable. Jamie is very fast and can create a lot but it was unbelievable how Mahrez found him and how he had the time to see the keeper out of the goal and score a fantastic goal."
  Media playback is not supported on this device
  Liverpool, who are now eighth and 16 points off top, look a long way from the side who beat Manchester City 4-1 and Southampton 6-1 in November and December.
  With Daniel Sturridge frequently injured and Christian Benteke out of favour, the Reds started with Roberto Firmino as their central forward but the Brazilian only had two efforts, one blocked and one off target.
  When BBC Match of the Day's Jonathan Pearce praised Liverpool's work ethic to Reds boss Jurgen Klopp, the German replied: "It's rare a journalist says something more positive than the manager.
  "I'm not too fine with our game today. We could have played much better. We had a few shots where we could pass and a few passes where we could shoot. We created half chances but not real chances. Today would have been a good day to show we are ready for this. I need a few more seconds to calm down. I have to watch it again."
  Leicester's next game is their biggest of the season to date. They visit second-placed Manchester City on Saturday lunchtime, knowing they could either be knocked off top - or go six points clear.
  "The team is in good condition," said Ranieri. "Now it is important to recover the energy because we have to run a lot against Manchester City. We are free of pressure. The players have a good feeling."
  Liverpool are at home to second-from-bottom Sunderland.
  Match ends, Leicester City 2, Liverpool 0.
  Second Half ends, Leicester City 2, Liverpool 0.
  Nathaniel Clyne (Liverpool) wins a free kick in the defensive half.
  Foul by Leonardo Ulloa (Leicester City).
  Substitution, Leicester City. Leonardo Ulloa replaces Riyad Mahrez.
  Foul by Mamadou Sakho (Liverpool).
  Andy King (Leicester City) wins a free kick on the right wing.
  Substitution, Liverpool. João Teixeira replaces Roberto Firmino.
  Substitution, Leicester City. Andy King replaces Shinji Okazaki.
  Lucas Leiva (Liverpool) is shown the yellow card for a bad foul.
  Foul by Lucas Leiva (Liverpool).
  Shinji Okazaki (Leicester City) wins a free kick in the attacking half.
  Corner,  Liverpool. Conceded by Robert Huth.
  Attempt blocked. Riyad Mahrez (Leicester City) left footed shot from outside the box is blocked.
  Corner,  Liverpool. Conceded by Robert Huth.
  Attempt blocked. Nathaniel Clyne (Liverpool) right footed shot from the right side of the box is blocked. Assisted by James Milner.
  Foul by Lucas Leiva (Liverpool).
  Shinji Okazaki (Leicester City) wins a free kick on the right wing.
  Substitution, Leicester City. Demarai Gray replaces Marc Albrighton.
  Attempt blocked. Roberto Firmino (Liverpool) right footed shot from outside the box is blocked. Assisted by Joe Allen.
  Corner,  Liverpool. Conceded by Wes Morgan.
  Foul by James Milner (Liverpool).
  Riyad Mahrez (Leicester City) wins a free kick on the right wing.
  Substitution, Liverpool. Joe Allen replaces Emre Can.
  Attempt missed. Adam Lallana (Liverpool) right footed shot from outside the box is too high. Assisted by Mamadou Sakho.
  Goal!  Leicester City 2, Liverpool 0. Jamie Vardy (Leicester City) left footed shot from the centre of the box to the top right corner.
  Attempt blocked. Shinji Okazaki (Leicester City) right footed shot from outside the box is blocked.
  Offside, Liverpool. Adam Lallana tries a through ball, but Christian Benteke is caught offside.
  Attempt saved. Emre Can (Liverpool) right footed shot from a difficult angle on the right is saved in the bottom right corner.
  Substitution, Liverpool. Christian Benteke replaces Jordan Henderson.
  Goal!  Leicester City 1, Liverpool 0. Jamie Vardy (Leicester City) right footed shot from outside the box to the top right corner. Assisted by Riyad Mahrez with a through ball.
  Attempt missed. Roberto Firmino (Liverpool) left footed shot from outside the box is too high. Assisted by Jordan Henderson.
  Attempt missed. Lucas Leiva (Liverpool) right footed shot from outside the box is too high. Assisted by Alberto Moreno with a cross.
  James Milner (Liverpool) wins a free kick in the defensive half.
  Foul by Danny Simpson (Leicester City).
  Attempt missed. Shinji Okazaki (Leicester City) right footed shot from outside the box is just a bit too high.
  Offside, Leicester City. Riyad Mahrez tries a through ball, but Jamie Vardy is caught offside.
  Corner,  Liverpool. Conceded by Daniel Drinkwater.
  Attempt blocked. Emre Can (Liverpool) right footed shot from the centre of the box is blocked. Assisted by Jordan Henderson.
  Second Half begins Leicester City 0, Liverpool 0.
target: Jamie Vardy scored twice as Leicester beat Liverpool to stay three points clear at the top of the Premier League.